Rose verbena (Glandularia canadensis formerly Verbenacanadensis) is a hardy plant that with very little effort on your part,produces aromatic, rosy pink or purple blooms from late spring to late summer. Interestedin growing rose verbena in your garden this year? Read on to learn how.
Rose Verbena Plant Info
This North American native, also known as clump verbena,rose mock vervain, or rose vervain, is commonly found growing wild in fields,prairies, pastures, meadows, and wooded areas across the eastern United States,as far west as Colorado and Texas.
Rose verbena uses include adding to flower beds, rosegardens, borders, or hanging baskets. The sprawling nature and ability to rootat the nodes make this plant a worthy groundcover. The sweet blooms attract bees,hummingbirds,and several types of butterflies.
The plant is perennial in USDA plant hardiness zones 5through 9, but it is easily grown as an annual in cooler climates.
Rose Verbena Care
Rose mock vervain thrives in full sunlight and tolerates poor,well-drained soil, including dry or rocky conditions. The plant won’t tolerateshade, crowded conditions, poor air circulation, or soggy soil.
Keep the soil slightly moist until the roots areestablished. At that point, watering once a week is generally sufficient. Waterat the base of the plant and try to keep the foliage as dry as possible.
Feed rose verbena plants in mid- to late spring, using alight application of a balanced, general-purpose fertilizer.
Pinchthe tips of newly planted rose verbena to stimulate fuller, bushier growth.Trim the entire plant back by about one-quarter of its height if blooming slowsin midsummer, then water well and feed the plant once more. Blooming shouldresume in a couple of weeks.
A light trim will neaten up the plant in fall, but hold offany major pruning until spring. Severe pruning late in the season can make theplant more susceptible to damage during the winter.
Although these plants tend to be relatively pest resistant,keep an eye out for aphids,spidermites, thrips,and whiteflies.Insecticidal soap spray usually takes care of the pests, but reapplication maybe necessary.
Rose verbena plants in zone 5 may need a layer of straw ormulch to protect them during the winter. The plants generally aren’t long lived,but they sometimes reseed themselves. If not, you may need to replace the plantafter two or three years.
Growing Rose Verbena Plants in Containers
Rose verbena plants are well suited for growing incontainers. Be sure to check the plant daily and water whenever the soil feelsdry to the touch. The plants may need water daily during hot, dry weather.
Provide a water-soluble fertilizer monthly, or use aslow-release fertilizer early in the growing season.
Great for use in both containers of all types and landscapes.
Self-cleaning, no deadheading necessary.
Superbena are our most vigorous, heat tolerant, and mildew tolerant series. While always great in containers they are also fantastic in landscape beds. They can tolerate dry soils and lower fertility. Normally either an application of slow release fertilizer or amending with compost is enough to keep them happy and blooming in landscape beds. They shouldn't need to be trimmed back but can be given a "haircut" - a trim back - using a sharp pair of scissors or pruning shears at any time. While naturally well branched, trimming them back will encourage additional branching, fuller plants, and ultimately more flowers. I usually give them a very slight trim as I am transplanting to boost branching.
An application of fertilizer or compost on garden beds and regular fertilization of plants in pots will help ensure the best possible performance.
Large clusters of soft pink to ruby flowers, grace well-branched plants. The flowers completely cover the canopy of dark green, powdery mildew-resistant foliage all summer without deadheading. It is an excellent spiller in combination planters and hanging baskets.
Superbena ® - Selected for their robust size, exceptional mildew resistance, and larger flowers that are produced all summer without deadheading, you won’t find a better verbena than Superbena.
Common Types of Verbena
Purpletop Verbena (Verbena Bonariensis)
Verbena Bonariensis also goes by various other names such as Purpletop vervain, Argentinian Verbena, Tall Verbena as well as Pretty Verbena. This variety originated from South America where it is a common sight in most of the warm regions of Colombia, Chile, Brazil, and Argentina. Therefore, purpletop verbena is often simply called South American Vervain in its native regions.
The plant is a true upright variety that can grow up to 6 feet tall and spread 3 feet across. The dull purple blossoms are strongly fragrant, appear during mid-summer and continue to provide a soothing sight for sore eyes until the first frost falls. Verbena Bonariensis is a pollinator attractor so, when you grow this variety also prepare to welcome a swarm of buzzing bees and cheerful butterflies flying in and out of your garden.
Brazilian Verbena (Verbena Brasiliensis)
The term Brazilian verbena or Brazilian vervain is often used interchangeably for the purpletop verbena, but the true Brazilian verbena is actually a different species altogether. Although it is native to South America or to be more precise, Brazil, the species has spread rapidly to other regions and is perceived as an invasive weed.
The Brazilian Verbena is an herbaceous plant which means that it grows as a low-lying shrub. Usually featuring purple shades, this type of verbena produces rich clusters of five-lobed and tubular flowers coupled with small and indented leaves. Brazilian Verbena is widely spotted in natural areas as well in home gardens in various parts of North America, such as Oregon, North and South Carolina, Tennessee, Florida, Virginia, Hawaii and many more.
Blue Vervain (Verbena Hastata)
Verbena Hastata, also known as the Blue vervain, American vervain or Swamp verbena is an herbaceous plant in the Verbenaceae family. Commonly seen all across North America, this type of verbenas is quite similar to the true Brazilian verbenas except that it can survive under more harsh weather conditions and produces beautiful blue flowers instead of purple ones.
Blue vervains are quite different from most of the other varieties in the sense that instead of growing in clusters, the flowers grows on thin and long individual branches that join together at the other end, giving the plant a unique and sophisticated look.
California Vervain (Verbena Californica)
California Vervain or the Red Hills vervain is a rather rare species of verbena whose growth is mostly limited to the Tuolumne County in California. The plant features small and slender, grass-like leaves on hairy stems that bear miniature purple flowers. The flowers contain five petals that grow closely together in small bunches.
California Vervain is unique to about a dozen spots in the Red Hills mountain range and has been listed under the endangered species because of being threatened by various factors such as cattle grazing, mining, trash dumping and other human interferences that damage its natural habitats.
Tuberous Vervain (Verbena Rigida)
Verbena Rigida or Tuberous Vervain is sometimes also called slender vervain due to its delicate plant structure. This type of verbenas is a herbaceous shrub that grown an average of 24 inches high. The plant also spread widely across and is, therefore, a good choice for garden beds as well as growing in pots and containers besides pool and patios. The leaves are toothed and stalkless and accentuated by the vibrant purple and magenta blossoms. Tuberous Vervain flowers are considerably scented and growing them in large patches will uplift the place with a dreamy fragrance. Although original verbena rigida features hues of purple, the species has been interbred to create different cultivars and hence, you can now choose tuberous verbenas from a wide range of colors.
The plant is native to South America but can be easily grown in home gardens in North America so long as there is sufficient sunlight and proper soil conditions. What makes tuberous vervain really fascinating is the shape of their petals, which look like a half hearts joined together in a circular ring (see close-up image below)
Texas Rose Verbena
A hybrid species, this type of verbena is not just a true perennial but also a real stunner. With intense pink flowers that are highlighted by the lively greens, the Texas Rose verbena is the preferred choice when it comes to quickly filling up empty spaces in the garden or nurturing a plant that will survive and flourish for a long time.
Blue Princess Verbena
Another hybrid species, this type of verbena was bred to produce bright blue flowers. However, don’t be confused by the name. Blue Princess verbena is not always blue. While their blooms can be mild blue in color, most plants actually produce lavender-colored light purplish-blue blossoms that are hardy up to zone 10. These showy flowers start blooming from early spring and continue well until the end of fall season. These verbenas grow in round clusters that contain lots of five-petal flowers arranged in a bunch.
White Vervain (Verbena Urticifolia)
Verbena Urticifolia, also called nettle-leaved vervain or more commonly as white vervain is one of the true types of verbena flowers. This herbaceous species is a perennial which means it has an average lifespan of two or more years. White verbena got the alternate name nettle-leaved vervain because the leaves, stem and flower stalks are all covered in soft bristles. Starting from early summer, the plant produces small buds on racemes (spikes like structures) that blooms open into pristine white flowers. However, some plants in Verbena Urticifolia also produce slightly bluish-white flowers as well.
The seeds and fruits of white verbenas are equally unique – dark purple capsules with miniature brown seeds.
Mint Vervain (Verbena Menthifolia)
The Verbena Menthifolia species commonly known as mint vervain or mint-leaved verbena is native to northern Mexico and the southwestern United States. This species prefers open and dry habitats and grows up to a maximum of 75 cm tall. The leaves are hairy and relatively small whereas the flowers grow as inflorescences (clusters) on slender upright stems.
Narrowleaf Vervain (Verbena Simplex)
Verbena Simplex is another type of verbenas that is more commonly referred to as the narrow leaf verbena. This herbaceous plant originates from North America and flourishes best when grown in dry and open lands that have calcium-rich soil. Verbena simplex produces flowers that have a similar color as that of lavenders and bloom excessively throughout the summer months.
Aren’t these flowers really appealing? When the winds of summer blow, it’s time for verbenas to grow. Plant these modest charmers in your own backyard, and you will surely relish the sight once these flowers bloom.